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Mr Khan called on India to provide evidence to support its claims that Pakistan was involved

Pakistan has warned it will retaliate if India takes military action against it after a militant attack on Indian forces in Indian-administered Kashmir.

Prime Minister Imran Khan went on television to call on India to provide evidence to support its claims that Pakistan was involved.

India responded that Mr Khan was again making excuses.

More than 40 members of India's security forces died in Thursday's suicide bombing on their convoy.

Pakistan-based militant group Jaish-e-Mohammad said it was behind it.

The attack has raised tensions between India and Pakistan, which have fought two wars and a limited conflict in the region and are both nuclear powers.

What did Khan say?

In his first comments addressing the attack, he said India should "stop blaming Pakistan without any proof or evidence" and urged Indian authorities to share any "actionable intelligence".

"If you think that you will launch any kind of attack on Pakistan, Pakistan will not just think about retaliation, Pakistan will retaliate," he said, adding that only dialogue could help solve issues in Kashmir.

India has long accused Pakistan of backing militant separatists in Indian-administered Kashmir.

Mr Khan, who took office last year, said his government was ready to co-operate with India in investigating the attack. But he also said Delhi should reflect on why Kashmiri youth had reached a point where they no longer feared death.

"I'd request all the mothers in Kashmir to please request their sons who have joined terrorism to surrender and get back to the mainstream," he said. "Otherwise anyone who has picked up the gun will be killed."

The suicide bomber has been identified as a young man from the region. Correspondents say a significant number of young Kashmiris have joined militant groups in recent years.

Uncomfortable questions for Khan

By BBC Pakistan correspondent, Secunder Kermani, in Islamabad

When Imran Khan took office last year he said he wanted to improve relations with India, and that for every one step India took, Pakistan would take two.

The traditional wisdom in Pakistan is that the country's army hasn't wanted closer ties between the two. However, as the military seems supportive of Imran Khan's administration it had been hoped progress could now be made. In fact, over the past few months, Indian officials have been the ones more reluctant to pursue negotiations - probably because of the upcoming elections.

In his speech, Imran Khan said there was "a new mindset" in Pakistan, and that any militant group using Pakistani soil was an "enemy" of the country. He asked the Indian government what gain they thought Pakistan could hope to achieve from an attack like this.

But while his confident and measured speech will go down well domestically, uncomfortable questions remain about the state's relationship with Kashmir-focused militant groups like Jaish-e-Mohammad. While JeM is a banned organisation, many international observers believe Pakistani intelligence services allow it operate under the radar.

How high are tensions?

Both India and Pakistan claim all of Muslim-majority Kashmir, but control only parts of it.

Thursday's bombing was the deadliest attack on Indian forces in the region for decades.

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Indian mourners held a candlelit vigil in Siliguri, West Bengal

So far India has focused on retaliation by economic and diplomatic means. It has revoked Pakistan's Most Favoured Nation trading status and raised customs duties to 200%.

Both countries have recalled top diplomats.

How else might India retaliate?

Prime Minister Narendra Modi, who is facing an election later this year, has vowed a strong response and says he will give the military free rein.

The last time an attack on Indian forces close to this magnitude occurred in Kashmir was in 2016, when 19 soldiers were killed at a base. In response to that, India carried out "surgical strikes" which involved Indian soldiers crossing the de facto border to hit Pakistani posts.

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Media captionIn December Yogita Limaye examined why there had been a rise in violence in Kashmir

This time heavy snow in the region could make that kind of limited ground response impossible, analysts say. But there are fears that going further - with air strikes, for example - could lead to Pakistani retaliation and a significant escalation.